I fancied an RF ND2 2.0 for the same reasons as you early days. I then chose an ND2 1.5 roadster after a test drive. I think you need to drive and choose. My choice was mainly based on I liked the feel of openness in the roadster vs the RF and the 1.5 suspension suited the types of roads I frequent. If you drive on long trips a lot, like the idea of perhaps more security via the hard top. Maybe the RF 2.0 is for you.
I remember this thread from May this year, maybe worth checking any potential purchases as one owner seemed to have some corrosion issues in the hardtop ? The thread seemed to stop without any conclusion so may be a one off. Some useful pics anyway …
https://forum.mx5oc.co.uk/t/nd-rf-rear-roof-corrosion/121534
No bad choice really !!